A news photographer films the logo of the Al Jazeera America nightly news program America Tonight in the network's studio space at the Newseum in Washington, DC.

Photo by SAUL LOEB/AFP/Getty Images

The Qatar-based news network Al Jazeera said on Tuesday that the network has evidence that its being jammed to prevent broadcast in Egypt. "After an extensive investigation by independent experts, Al Jazeera can categorically say that Egyptian authorities are deliberately jamming our satellite signals, forcing the network to change frequencies so viewers can tune in," the network reported.